Figure 3.

Cells with Longitudinal PPBs Were More Cube-Shaped and Had More Longitudinal Predictions in Silico Than Cells with Transverse PPBs.

(A) Box and whisker plot of the percent longitudinal divisions predicted between transverse or longitudinal PPBs. Cells with longitudinal PPBs (n = 36) predicted significantly (mean = 5.1% ± 3.6 sd) more longitudinal divisions than those with transverse PPBs (n = 145, mean = 1.9% ± 2.6 sd, Mann-Whitney, P < 0.0001).

(B) Dot plot of eigenvalue ratios of cells with a transverse (n = 145, mean = 4.3 ± 1.4 sd) or longitudinal PPB (n = 36, mean = 2.8 ± 0.7 sd). Cells with transverse PPBs had higher eigenvalue ratios (Mann-Whitney, P < 0.0001).

(C) Cells with varying eigenvalue ratios. Larger eigenvalue ratios reflected longer and thinner cells (cells not displayed to scale).

(D) Eigenvalue ratio versus fraction transverse division predicted. Cells with higher eigenvalue ratios ended up having higher proportions of transverse divisions predicted, a relationship with significant correlation (P < 0.0001 for both leaves; young leaf Pearson R² = 0.46; old leaf Pearson R² = 0.49).

(E) Histogram of cells that display longitudinal PPB binned by eigenvalue ratio for both maize leaf data sets. The young leaf sample had higher proportions of cells with longitudinal PPBs across all eigenvalue ratios.